1377450825 has 12 divisors (see below), whose sum is σ = 2277385488. Its totient is φ = 734640400.

The previous prime is 1377450817. The next prime is 1377450829. The reversal of 1377450825 is 5280547731.

It is not a de Polignac number, because 1377450825 - 2³ = 1377450817 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1377450829) 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, 9182931 + ... + 9183080.

It is an arithmetic number, because the mean of its divisors is an integer number (189782124).

Almost surely, 2^1377450825 is an apocalyptic number.

1377450825 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1377450825 is a deficient number, since it is larger than the sum of its proper divisors (899934663).

1377450825 is a wasteful number, since it uses less digits than its factorization.

1377450825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18366024 (or 18366019 counting only the distinct ones).

The product of its (nonzero) digits is 235200, while the sum is 42.

The square root of 1377450825 is about 37114.0246402893. The cubic root of 1377450825 is about 1112.6503302302.

The spelling of 1377450825 in words is "one billion, three hundred seventy-seven million, four hundred fifty thousand, eight hundred twenty-five".