125515772 has 6 divisors (see below), whose sum is σ = 219652608. Its totient is φ = 62757884.

The previous prime is 125515771. The next prime is 125515781. The reversal of 125515772 is 277515521.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125515771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15689468 + ... + 15689475.

It is an arithmetic number, because the mean of its divisors is an integer number (36608768).

Almost surely, 2^125515772 is an apocalyptic number.

It is an amenable number.

125515772 is a deficient number, since it is larger than the sum of its proper divisors (94136836).

125515772 is a wasteful number, since it uses less digits than its factorization.

125515772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31378947 (or 31378945 counting only the distinct ones).

The product of its digits is 24500, while the sum is 35.

The square root of 125515772 is about 11203.3821678991. The cubic root of 125515772 is about 500.6867523107.

The spelling of 125515772 in words is "one hundred twenty-five million, five hundred fifteen thousand, seven hundred seventy-two".