25002513997 has 4 divisors (see below), whose sum is σ = 25121009536. Its totient is φ = 24884018460.

The previous prime is 25002513983. The next prime is 25002514027. The reversal of 25002513997 is 79931520052.

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 25002513997 - 2⁷ = 25002513869 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 (25002513197) 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, 59247453 + ... + 59247874.

It is an arithmetic number, because the mean of its divisors is an integer number (6280252384).

Almost surely, 2^25002513997 is an apocalyptic number.

It is an amenable number.

25002513997 is a deficient number, since it is larger than the sum of its proper divisors (118495539).

25002513997 is a wasteful number, since it uses less digits than its factorization.

25002513997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118495538.

The product of its (nonzero) digits is 170100, while the sum is 43.

The spelling of 25002513997 in words is "twenty-five billion, two million, five hundred thirteen thousand, nine hundred ninety-seven".