125012554 has 4 divisors (see below), whose sum is σ = 187518834. Its totient is φ = 62506276.

The previous prime is 125012539. The next prime is 125012557. The reversal of 125012554 is 455210521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 455210521 = 10589 ⋅42989.

It can be written as a sum of positive squares in only one way, i.e., 100460529 + 24552025 = 10023^2 + 4955^2 .

It is not an unprimeable number, because it can be changed into a prime (125012557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31253137 + ... + 31253140.

Almost surely, 2^125012554 is an apocalyptic number.

125012554 is a deficient number, since it is larger than the sum of its proper divisors (62506280).

125012554 is an equidigital number, since it uses as much as digits as its factorization.

125012554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62506279.

The product of its (nonzero) digits is 2000, while the sum is 25.

The square root of 125012554 is about 11180.9013053510. The cubic root of 125012554 is about 500.0167381063.

The spelling of 125012554 in words is "one hundred twenty-five million, twelve thousand, five hundred fifty-four".