1377660425 has 12 divisors (see below), whose sum is σ = 1708933776. Its totient is φ = 1101718800.

The previous prime is 1377660421. The next prime is 1377660439. The reversal of 1377660425 is 5240667731.

It is not a de Polignac number, because 1377660425 - 2² = 1377660421 is a prime.

It is a super-2 number, since 2×1377660425² = 3795896493222361250, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1377660421) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 71030 + ... + 88320.

It is an arithmetic number, because the mean of its divisors is an integer number (142411148).

Almost surely, 2^1377660425 is an apocalyptic number.

It is an amenable number.

1377660425 is a deficient number, since it is larger than the sum of its proper divisors (331273351).

1377660425 is a wasteful number, since it uses less digits than its factorization.

1377660425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20488 (or 20483 counting only the distinct ones).

The product of its (nonzero) digits is 211680, while the sum is 41.

The square root of 1377660425 is about 37116.8482632887. The cubic root of 1377660425 is about 1112.7067628996.

The spelling of 1377660425 in words is "one billion, three hundred seventy-seven million, six hundred sixty thousand, four hundred twenty-five".