126656425 has 18 divisors (see below), whose sum is σ = 182697198. Its totient is φ = 86849280.

The previous prime is 126656393. The next prime is 126656437. The reversal of 126656425 is 524656621.

It can be written as a sum of positive squares in 3 ways, for example, as 4177936 + 122478489 = 2044^2 + 11067^2 .

It is not a de Polignac number, because 126656425 - 2⁵ = 126656393 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 50472 + ... + 52921.

Almost surely, 2^126656425 is an apocalyptic number.

It is an amenable number.

126656425 is a deficient number, since it is larger than the sum of its proper divisors (56040773).

126656425 is a wasteful number, since it uses less digits than its factorization.

126656425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103417 (or 103405 counting only the distinct ones).

The product of its digits is 86400, while the sum is 37.

The square root of 126656425 is about 11254.1736702434. The cubic root of 126656425 is about 502.1988823240.

The spelling of 126656425 in words is "one hundred twenty-six million, six hundred fifty-six thousand, four hundred twenty-five".