1377421325 has 24 divisors (see below), whose sum is σ = 1953589248. Its totient is φ = 943750080.

The previous prime is 1377421319. The next prime is 1377421333. The reversal of 1377421325 is 5231247731.

It is a happy number.

It is not a de Polignac number, because 1377421325 - 2⁶ = 1377421261 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

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 23 ways as a sum of consecutive naturals, for example, 288659 + ... + 293391.

It is an arithmetic number, because the mean of its divisors is an integer number (81399552).

Almost surely, 2^1377421325 is an apocalyptic number.

It is an amenable number.

1377421325 is a deficient number, since it is larger than the sum of its proper divisors (576167923).

1377421325 is a wasteful number, since it uses less digits than its factorization.

1377421325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6413 (or 6408 counting only the distinct ones).

The product of its digits is 35280, while the sum is 35.

The square root of 1377421325 is about 37113.6272142727. The cubic root of 1377421325 is about 1112.6423871955.

The spelling of 1377421325 in words is "one billion, three hundred seventy-seven million, four hundred twenty-one thousand, three hundred twenty-five".