25324502397 has 16 divisors (see below), whose sum is σ = 34340188992. Its totient is φ = 16596241920.

The previous prime is 25324502389. The next prime is 25324502417. The reversal of 25324502397 is 79320542352.

It is a happy number.

It is not a de Polignac number, because 25324502397 - 2³ = 25324502389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25324502297) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 269778 + ... + 351324.

It is an arithmetic number, because the mean of its divisors is an integer number (2146261812).

Almost surely, 2^25324502397 is an apocalyptic number.

It is an amenable number.

25324502397 is a deficient number, since it is larger than the sum of its proper divisors (9015686595).

25324502397 is a wasteful number, since it uses less digits than its factorization.

25324502397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83308.

The product of its (nonzero) digits is 453600, while the sum is 42.

The spelling of 25324502397 in words is "twenty-five billion, three hundred twenty-four million, five hundred two thousand, three hundred ninety-seven".