25131880573 has 4 divisors (see below), whose sum is σ = 25173697948. Its totient is φ = 25090063200.

The previous prime is 25131880549. The next prime is 25131880597. The reversal of 25131880573 is 37508813152.

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

It is an interprime number because it is at equal distance from previous prime (25131880549) and next prime (25131880597).

It can be written as a sum of positive squares in 2 ways, for example, as 8404855684 + 16727024889 = 91678^2 + 129333^2 .

It is a cyclic number.

It is not a de Polignac number, because 25131880573 - 2⁵ = 25131880541 is a prime.

It is a super-2 number, since 2×25131880573² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25131880523) 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, 20907786 + ... + 20908987.

It is an arithmetic number, because the mean of its divisors is an integer number (6293424487).

Almost surely, 2^25131880573 is an apocalyptic number.

It is an amenable number.

25131880573 is a deficient number, since it is larger than the sum of its proper divisors (41817375).

25131880573 is an equidigital number, since it uses as much as digits as its factorization.

25131880573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41817374.

The product of its (nonzero) digits is 201600, while the sum is 43.

The spelling of 25131880573 in words is "twenty-five billion, one hundred thirty-one million, eight hundred eighty thousand, five hundred seventy-three".