25211512445 has 64 divisors (see below), whose sum is σ = 37372133376. Its totient is φ = 15947331840.

The previous prime is 25211512423. The next prime is 25211512457. The reversal of 25211512445 is 54421511252.

It is not a de Polignac number, because 25211512445 - 2¹⁰ = 25211511421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 7909142 + ... + 7912328.

It is an arithmetic number, because the mean of its divisors is an integer number (583939584).

Almost surely, 2^25211512445 is an apocalyptic number.

It is an amenable number.

25211512445 is a deficient number, since it is larger than the sum of its proper divisors (12160620931).

25211512445 is a wasteful number, since it uses less digits than its factorization.

25211512445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3570.

The product of its digits is 16000, while the sum is 32.

The spelling of 25211512445 in words is "twenty-five billion, two hundred eleven million, five hundred twelve thousand, four hundred forty-five".