25112532145 has 12 divisors (see below), whose sum is σ = 30971519964. Its totient is φ = 19547046720.

The previous prime is 25112532139. The next prime is 25112532149. The reversal of 25112532145 is 54123521152.

It can be written as a sum of positive squares in 6 ways, for example, as 7111211584 + 18001320561 = 84328^2 + 134169^2 .

It is not a de Polignac number, because 25112532145 - 2⁵ = 25112532113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25112532149) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1827526 + ... + 1841215.

It is an arithmetic number, because the mean of its divisors is an integer number (2580959997).

Almost surely, 2^25112532145 is an apocalyptic number.

It is an amenable number.

25112532145 is a deficient number, since it is larger than the sum of its proper divisors (5858987819).

25112532145 is an equidigital number, since it uses as much as digits as its factorization.

25112532145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3668820 (or 3668783 counting only the distinct ones).

The product of its digits is 12000, while the sum is 31.

The spelling of 25112532145 in words is "twenty-five billion, one hundred twelve million, five hundred thirty-two thousand, one hundred forty-five".