126126625 has 16 divisors (see below), whose sum is σ = 158867280. Its totient is φ = 99964800.

The previous prime is 126126613. The next prime is 126126653. The reversal of 126126625 is 526621621.

It can be written as a sum of positive squares in 8 ways, for example, as 61340224 + 64786401 = 7832^2 + 8049^2 .

It is not a de Polignac number, because 126126625 - 2¹⁷ = 125995553 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8997 + ... + 18253.

It is an arithmetic number, because the mean of its divisors is an integer number (9929205).

Almost surely, 2^126126625 is an apocalyptic number.

It is an amenable number.

126126625 is a deficient number, since it is larger than the sum of its proper divisors (32740655).

126126625 is an equidigital number, since it uses as much as digits as its factorization.

126126625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9381 (or 9371 counting only the distinct ones).

The product of its digits is 8640, while the sum is 31.

The square root of 126126625 is about 11230.6110697504. The cubic root of 126126625 is about 501.4976761200.

The spelling of 126126625 in words is "one hundred twenty-six million, one hundred twenty-six thousand, six hundred twenty-five".