625440499 has 16 divisors (see below), whose sum is σ = 666489600. Its totient is φ = 585255456.

The previous prime is 625440481. The next prime is 625440509. The reversal of 625440499 is 994044526.

625440499 = T₂₆₀₂ + T₂₆₀₃ + ... + T₂₇₇₄.

625440499 = 172² + 173² + ... + 1234².

It is a cyclic number.

It is not a de Polignac number, because 625440499 - 2⁷ = 625440371 is a prime.

It is not an unprimeable number, because it can be changed into a prime (625440479) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 587842 + ... + 588904.

It is an arithmetic number, because the mean of its divisors is an integer number (41655600).

Almost surely, 2^625440499 is an apocalyptic number.

625440499 is a deficient number, since it is larger than the sum of its proper divisors (41049101).

625440499 is a wasteful number, since it uses less digits than its factorization.

625440499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1434.

The product of its (nonzero) digits is 311040, while the sum is 43.

The square root of 625440499 is about 25008.8084282318. The cubic root of 625440499 is about 855.1887908856.

The spelling of 625440499 in words is "six hundred twenty-five million, four hundred forty thousand, four hundred ninety-nine".