123977000025 has 36 divisors (see below), whose sum is σ = 222240135468. Its totient is φ = 66066410880.

The previous prime is 123976999943. The next prime is 123977000051. The reversal of 123977000025 is 520000779321.

It can be written as a sum of positive squares in 6 ways, for example, as 14148388809 + 109828611216 = 118947^2 + 331404^2 .

It is not a de Polignac number, because 123977000025 - 2¹⁹ = 123976475737 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 45799 + ... + 500051.

Almost surely, 2^123977000025 is an apocalyptic number.

123977000025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

123977000025 is a deficient number, since it is larger than the sum of its proper divisors (98263135443).

123977000025 is a wasteful number, since it uses less digits than its factorization.

123977000025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 455482 (or 455474 counting only the distinct ones).

The product of its (nonzero) digits is 26460, while the sum is 36.

Adding to 123977000025 its reverse (520000779321), we get a palindrome (643977779346).

The spelling of 123977000025 in words is "one hundred twenty-three billion, nine hundred seventy-seven million, twenty-five", and thus it is an aban number.