25187904001 has 4 divisors (see below), whose sum is σ = 27125435092. Its totient is φ = 23250372912.

The previous prime is 25187903969. The next prime is 25187904011. The reversal of 25187904001 is 10040978152.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8869118976 + 16318785025 = 94176^2 + 127745^2 .

It is not a de Polignac number, because 25187904001 - 2⁵ = 25187903969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25187904011) 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, 968765526 + ... + 968765551.

It is an arithmetic number, because the mean of its divisors is an integer number (6781358773).

Almost surely, 2^25187904001 is an apocalyptic number.

It is an amenable number.

25187904001 is a deficient number, since it is larger than the sum of its proper divisors (1937531091).

25187904001 is a wasteful number, since it uses less digits than its factorization.

25187904001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1937531090.

The product of its (nonzero) digits is 20160, while the sum is 37.

The spelling of 25187904001 in words is "twenty-five billion, one hundred eighty-seven million, nine hundred four thousand, one".