125215405100 has 36 divisors (see below), whose sum is σ = 272169668568. Its totient is φ = 50002800000.

The previous prime is 125215405093. The next prime is 125215405103. The reversal of 125215405100 is 1504512521.

It is a super-3 number, since 3×125215405100³ (a number of 34 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 125215405100.

It is not an unprimeable number, because it can be changed into a prime (125215405103) 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, 981626 + ... + 1101825.

Almost surely, 2^125215405100 is an apocalyptic number.

125215405100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

125215405100 is an abundant number, since it is smaller than the sum of its proper divisors (146954263468).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

125215405100 is a wasteful number, since it uses less digits than its factorization.

125215405100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2084066 (or 2084059 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 26.

Adding to 125215405100 its reverse (1504512521), we get a palindrome (126719917621).

The spelling of 125215405100 in words is "one hundred twenty-five billion, two hundred fifteen million, four hundred five thousand, one hundred".