25690038 has 32 divisors (see below), whose sum is σ = 56298240. Its totient is φ = 7750560.

The previous prime is 25690003. The next prime is 25690039. The reversal of 25690038 is 83009652.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a junction number, because it is equal to n+sod(n) for n = 25689990 and 25690008.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25690039) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17031 + ... + 18477.

It is an arithmetic number, because the mean of its divisors is an integer number (1759320).

Almost surely, 2^25690038 is an apocalyptic number.

25690038 is an abundant number, since it is smaller than the sum of its proper divisors (30608202).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25690038 is a wasteful number, since it uses less digits than its factorization.

25690038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1732.

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 25690038 is about 5068.5341076094. The cubic root of 25690038 is about 295.0676393785.

The spelling of 25690038 in words is "twenty-five million, six hundred ninety thousand, thirty-eight".