525455403 has 16 divisors (see below), whose sum is σ = 776831232. Its totient is φ = 313236000.

The previous prime is 525455383. The next prime is 525455477. The reversal of 525455403 is 304554525.

It is not a de Polignac number, because 525455403 - 2²⁴ = 508678187 is a prime.

It is a super-2 number, since 2×525455403² = 552206761083784818, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (525455603) 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, 128503 + ... + 132528.

It is an arithmetic number, because the mean of its divisors is an integer number (48551952).

Almost surely, 2^525455403 is an apocalyptic number.

525455403 is a deficient number, since it is larger than the sum of its proper divisors (251375829).

525455403 is a wasteful number, since it uses less digits than its factorization.

525455403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261106.

The product of its (nonzero) digits is 60000, while the sum is 33.

The square root of 525455403 is about 22922.8140288229. The cubic root of 525455403 is about 806.9475128205.

The spelling of 525455403 in words is "five hundred twenty-five million, four hundred fifty-five thousand, four hundred three".