125456261 has 4 divisors (see below), whose sum is σ = 143378592. Its totient is φ = 107533932.

The previous prime is 125456231. The next prime is 125456263. The reversal of 125456261 is 162654521.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 162654521 = 17 ⋅9567913.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-125456261 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125456263) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8961155 + ... + 8961168.

It is an arithmetic number, because the mean of its divisors is an integer number (35844648).

Almost surely, 2^125456261 is an apocalyptic number.

It is an amenable number.

125456261 is a deficient number, since it is larger than the sum of its proper divisors (17922331).

125456261 is an equidigital number, since it uses as much as digits as its factorization.

125456261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17922330.

The product of its digits is 14400, while the sum is 32.

The square root of 125456261 is about 11200.7259139754. The cubic root of 125456261 is about 500.6076093227.

The spelling of 125456261 in words is "one hundred twenty-five million, four hundred fifty-six thousand, two hundred sixty-one".