425157444 has 24 divisors (see below), whose sum is σ = 1102260320. Its totient is φ = 141719112.

The previous prime is 425157431. The next prime is 425157463. The reversal of 425157444 is 444751524.

425157444 is a `hidden beast` number, since 42 + 5 + 1 + 574 + 44 = 666.

It is a super-2 number, since 2×425157444² = 361517704377226272, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 425157399 and 425157408.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1968214 + ... + 1968429.

Almost surely, 2^425157444 is an apocalyptic number.

It is an amenable number.

425157444 is an abundant number, since it is smaller than the sum of its proper divisors (677102876).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

425157444 is a wasteful number, since it uses less digits than its factorization.

425157444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3936656 (or 3936648 counting only the distinct ones).

The product of its digits is 89600, while the sum is 36.

The square root of 425157444 is about 20619.3463523944. The cubic root of 425157444 is about 751.9401288723.

The spelling of 425157444 in words is "four hundred twenty-five million, one hundred fifty-seven thousand, four hundred forty-four".