690450825 has 12 divisors (see below), whose sum is σ = 1141545488. Its totient is φ = 368240400.

The previous prime is 690450809. The next prime is 690450833. The reversal of 690450825 is 528054096.

It is not a de Polignac number, because 690450825 - 2⁴ = 690450809 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4602931 + ... + 4603080.

Almost surely, 2^690450825 is an apocalyptic number.

It is an amenable number.

690450825 is a deficient number, since it is larger than the sum of its proper divisors (451094663).

690450825 is a wasteful number, since it uses less digits than its factorization.

690450825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9206024 (or 9206019 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 39.

The square root of 690450825 is about 26276.4309791113. The cubic root of 690450825 is about 883.8480015650.

The spelling of 690450825 in words is "six hundred ninety million, four hundred fifty thousand, eight hundred twenty-five".