25131521001 has 8 divisors (see below), whose sum is σ = 33932855680. Its totient is φ = 16542266832.

The previous prime is 25131520993. The next prime is 25131521047. The reversal of 25131521001 is 10012513152.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 25131521001 - 2³ = 25131520993 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (25131521201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53019850 + ... + 53020323.

It is an arithmetic number, because the mean of its divisors is an integer number (4241606960).

Almost surely, 2^25131521001 is an apocalyptic number.

It is an amenable number.

25131521001 is a deficient number, since it is larger than the sum of its proper divisors (8801334679).

25131521001 is a wasteful number, since it uses less digits than its factorization.

25131521001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106040255.

The product of its (nonzero) digits is 300, while the sum is 21.

It can be divided in two parts, 2513152 and 1001, that multiplied together give a palindrome (2515665152).

The spelling of 25131521001 in words is "twenty-five billion, one hundred thirty-one million, five hundred twenty-one thousand, one".