25404973 has 4 divisors (see below), whose sum is σ = 27714528. Its totient is φ = 23095420.

The previous prime is 25404971. The next prime is 25404989. The reversal of 25404973 is 37940452.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 25404973 - 2¹ = 25404971 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25404971) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1154761 + ... + 1154782.

It is an arithmetic number, because the mean of its divisors is an integer number (6928632).

Almost surely, 2^25404973 is an apocalyptic number.

It is an amenable number.

25404973 is a deficient number, since it is larger than the sum of its proper divisors (2309555).

25404973 is a wasteful number, since it uses less digits than its factorization.

25404973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2309554.

The product of its (nonzero) digits is 30240, while the sum is 34.

The square root of 25404973 is about 5040.3346119082. The cubic root of 25404973 is about 293.9721887401.

The spelling of 25404973 in words is "twenty-five million, four hundred four thousand, nine hundred seventy-three".