125509141950 has 24 divisors (see below), whose sum is σ = 311262672408. Its totient is φ = 33469104480.

The previous prime is 125509141931. The next prime is 125509141973. The reversal of 125509141950 is 59141905521.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 418363657 + ... + 418363956.

It is an arithmetic number, because the mean of its divisors is an integer number (12969278017).

Almost surely, 2^125509141950 is an apocalyptic number.

125509141950 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

125509141950 is an abundant number, since it is smaller than the sum of its proper divisors (185753530458).

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

125509141950 is a wasteful number, since it uses less digits than its factorization.

125509141950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 836727628 (or 836727623 counting only the distinct ones).

The product of its (nonzero) digits is 81000, while the sum is 42.

The spelling of 125509141950 in words is "one hundred twenty-five billion, five hundred nine million, one hundred forty-one thousand, nine hundred fifty".