920025631 has 4 divisors (see below), whose sum is σ = 1051457872. Its totient is φ = 788593392.

The previous prime is 920025593. The next prime is 920025637. The reversal of 920025631 is 136520029.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 920025631 - 2¹⁹ = 919501343 is a prime.

It is a super-2 number, since 2×920025631² = 1692894323393896322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 920025631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (920025637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65716110 + ... + 65716123.

It is an arithmetic number, because the mean of its divisors is an integer number (262864468).

Almost surely, 2^920025631 is an apocalyptic number.

920025631 is a deficient number, since it is larger than the sum of its proper divisors (131432241).

920025631 is a wasteful number, since it uses less digits than its factorization.

920025631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131432240.

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 920025631 is about 30331.9242877863. The cubic root of 920025631 is about 972.5978581727.

It can be divided in two parts, 920025 and 631, that multiplied together give a triangular number (580535775 = T₃₄₀₇₄).

The spelling of 920025631 in words is "nine hundred twenty million, twenty-five thousand, six hundred thirty-one".