25131013001 has 4 divisors (see below), whose sum is σ = 25132844100. Its totient is φ = 25129181904.

The previous prime is 25131012989. The next prime is 25131013097. The reversal of 25131013001 is 10031013152.

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 11219046400 + 13911966601 = 105920^2 + 117949^2 .

It is a cyclic number.

It is not a de Polignac number, because 25131013001 - 2²⁶ = 25063904137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25131015001) 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, 894806 + ... + 922463.

It is an arithmetic number, because the mean of its divisors is an integer number (6283211025).

Almost surely, 2^25131013001 is an apocalyptic number.

It is an amenable number.

25131013001 is a deficient number, since it is larger than the sum of its proper divisors (1831099).

25131013001 is a wasteful number, since it uses less digits than its factorization.

25131013001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1831098.

The product of its (nonzero) digits is 90, while the sum is 17.

Adding to 25131013001 its reverse (10031013152), we get a palindrome (35162026153).

The spelling of 25131013001 in words is "twenty-five billion, one hundred thirty-one million, thirteen thousand, one".