25123222131215 has 64 divisors (see below), whose sum is σ = 34419516558336. Its totient is φ = 17463076595712.

The previous prime is 25123222131199. The next prime is 25123222131221. The reversal of 25123222131215 is 51213122232152.

It is a cyclic number.

It is not a de Polignac number, because 25123222131215 - 2⁴ = 25123222131199 is a prime.

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, 97732844 + ... + 97989566.

It is an arithmetic number, because the mean of its divisors is an integer number (537804946224).

Almost surely, 2^{25123222131215} is an apocalyptic number.

25123222131215 is a deficient number, since it is larger than the sum of its proper divisors (9296294427121).

25123222131215 is a wasteful number, since it uses less digits than its factorization.

25123222131215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257808.

The product of its digits is 14400, while the sum is 32.

Adding to 25123222131215 its reverse (51213122232152), we get a palindrome (76336344363367).

The spelling of 25123222131215 in words is "twenty-five trillion, one hundred twenty-three billion, two hundred twenty-two million, one hundred thirty-one thousand, two hundred fifteen".