25901913 has 4 divisors (see below), whose sum is σ = 34535888. Its totient is φ = 17267940.

The previous prime is 25901903. The next prime is 25901923. The reversal of 25901913 is 31910952.

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 an interprime number because it is at equal distance from previous prime (25901903) and next prime (25901923).

It is not a de Polignac number, because 25901913 - 2⁶ = 25901849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25901903) 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, 4316983 + ... + 4316988.

It is an arithmetic number, because the mean of its divisors is an integer number (8633972).

Almost surely, 2^25901913 is an apocalyptic number.

It is an amenable number.

25901913 is a deficient number, since it is larger than the sum of its proper divisors (8633975).

25901913 is an equidigital number, since it uses as much as digits as its factorization.

25901913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8633974.

The product of its (nonzero) digits is 2430, while the sum is 30.

The square root of 25901913 is about 5089.3922033972. The cubic root of 25901913 is about 295.8765958992.

The spelling of 25901913 in words is "twenty-five million, nine hundred one thousand, nine hundred thirteen".