25326693497 has 16 divisors (see below), whose sum is σ = 29204297472. Its totient is φ = 21514636800.

The previous prime is 25326693479. The next prime is 25326693523. The reversal of 25326693497 is 79439662352.

It is a cyclic number.

It is not a de Polignac number, because 25326693497 - 2⁸ = 25326693241 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25326693407) 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, 430013 + ... + 485349.

It is an arithmetic number, because the mean of its divisors is an integer number (1825268592).

Almost surely, 2^25326693497 is an apocalyptic number.

It is an amenable number.

25326693497 is a deficient number, since it is larger than the sum of its proper divisors (3877603975).

25326693497 is a wasteful number, since it uses less digits than its factorization.

25326693497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55928.

The product of its digits is 14696640, while the sum is 56.

The spelling of 25326693497 in words is "twenty-five billion, three hundred twenty-six million, six hundred ninety-three thousand, four hundred ninety-seven".