1625490 has 24 divisors (see below), whose sum is σ = 4226508. Its totient is φ = 433440.

The previous prime is 1625483. The next prime is 1625497. The reversal of 1625490 is 945261.

It is an interprime number because it is at equal distance from previous prime (1625483) and next prime (1625497).

It can be written as a sum of positive squares in 2 ways, for example, as 1610361 + 15129 = 1269^2 + 123^2 .

It is not an unprimeable number, because it can be changed into a prime (1625497) 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, 8941 + ... + 9120.

2^1625490 is an apocalyptic number.

1625490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1625490 is an abundant number, since it is smaller than the sum of its proper divisors (2601018).

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

1625490 is a wasteful number, since it uses less digits than its factorization.

1625490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18074 (or 18071 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 1625490 is about 1274.9470577244. The cubic root of 1625490 is about 117.5785501626.

The spelling of 1625490 in words is "one million, six hundred twenty-five thousand, four hundred ninety".