125566355 has 4 divisors (see below), whose sum is σ = 150679632. Its totient is φ = 100453080.

The previous prime is 125566283. The next prime is 125566367. The reversal of 125566355 is 553665521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 553665521 = 37 ⋅14963933.

It is not a de Polignac number, because 125566355 - 2¹² = 125562259 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12556631 + ... + 12556640.

It is an arithmetic number, because the mean of its divisors is an integer number (37669908).

Almost surely, 2^125566355 is an apocalyptic number.

125566355 is a deficient number, since it is larger than the sum of its proper divisors (25113277).

125566355 is an equidigital number, since it uses as much as digits as its factorization.

125566355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25113276.

The product of its digits is 135000, while the sum is 38.

The square root of 125566355 is about 11205.6394284307. The cubic root of 125566355 is about 500.7540023892.

The spelling of 125566355 in words is "one hundred twenty-five million, five hundred sixty-six thousand, three hundred fifty-five".