123254531225 has 24 divisors (see below), whose sum is σ = 175290947328. Its totient is φ = 84216585600.

The previous prime is 123254531173. The next prime is 123254531227. The reversal of 123254531225 is 522135452321.

It is not a de Polignac number, because 123254531225 - 2¹² = 123254527129 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is not an unprimeable number, because it can be changed into a prime (123254531227) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1204049 + ... + 1302398.

It is an arithmetic number, because the mean of its divisors is an integer number (7303789472).

Almost surely, 2^123254531225 is an apocalyptic number.

It is an amenable number.

123254531225 is a deficient number, since it is larger than the sum of its proper divisors (52036416103).

123254531225 is a wasteful number, since it uses less digits than its factorization.

123254531225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2506745 (or 2506740 counting only the distinct ones).

The product of its digits is 72000, while the sum is 35.

Adding to 123254531225 its reverse (522135452321), we get a palindrome (645389983546).

The spelling of 123254531225 in words is "one hundred twenty-three billion, two hundred fifty-four million, five hundred thirty-one thousand, two hundred twenty-five".