125377961 has 4 divisors (see below), whose sum is σ = 125664000. Its totient is φ = 125091924.

The previous prime is 125377957. The next prime is 125378003. The reversal of 125377961 is 169773521.

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: 169773521 = 6131 ⋅27691.

It is a cyclic number.

It is not a de Polignac number, because 125377961 - 2² = 125377957 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125377921) 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, 142361 + ... + 143238.

It is an arithmetic number, because the mean of its divisors is an integer number (31416000).

Almost surely, 2^125377961 is an apocalyptic number.

It is an amenable number.

125377961 is a deficient number, since it is larger than the sum of its proper divisors (286039).

125377961 is an equidigital number, since it uses as much as digits as its factorization.

125377961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286038.

The product of its digits is 79380, while the sum is 41.

The square root of 125377961 is about 11197.2300592602. The cubic root of 125377961 is about 500.5034409243.

The spelling of 125377961 in words is "one hundred twenty-five million, three hundred seventy-seven thousand, nine hundred sixty-one".