125740551 has 16 divisors (see below), whose sum is σ = 178105824. Its totient is φ = 78633984.

The previous prime is 125740543. The next prime is 125740561. The reversal of 125740551 is 155047521.

It is not a de Polignac number, because 125740551 - 2³ = 125740543 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125740561) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12025 + ... + 19901.

It is an arithmetic number, because the mean of its divisors is an integer number (11131614).

Almost surely, 2^125740551 is an apocalyptic number.

125740551 is a deficient number, since it is larger than the sum of its proper divisors (52365273).

125740551 is a wasteful number, since it uses less digits than its factorization.

125740551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8210.

The product of its (nonzero) digits is 7000, while the sum is 30.

The square root of 125740551 is about 11213.4094280018. The cubic root of 125740551 is about 500.9854578032.

The spelling of 125740551 in words is "one hundred twenty-five million, seven hundred forty thousand, five hundred fifty-one".