137959425 has 18 divisors (see below), whose sum is σ = 247101062. Its totient is φ = 73578240.

The previous prime is 137959391. The next prime is 137959433. The reversal of 137959425 is 524959731.

It is a happy number.

137959425 is a `hidden beast` number, since 1 + 37 + 9 + 594 + 25 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 48316401 + 89643024 = 6951^2 + 9468^2 .

It is not a de Polignac number, because 137959425 - 2⁹ = 137958913 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 306352 + ... + 306801.

Almost surely, 2^137959425 is an apocalyptic number.

137959425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

137959425 is a deficient number, since it is larger than the sum of its proper divisors (109141637).

137959425 is a wasteful number, since it uses less digits than its factorization.

137959425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 613169 (or 613161 counting only the distinct ones).

The product of its digits is 340200, while the sum is 45.

The square root of 137959425 is about 11745.6130108224. The cubic root of 137959425 is about 516.7142735645.

It can be divided in two parts, 137959 and 425, that added together give a square (138384 = 372²).

The spelling of 137959425 in words is "one hundred thirty-seven million, nine hundred fifty-nine thousand, four hundred twenty-five".