25135503 has 8 divisors (see below), whose sum is σ = 35485488. Its totient is φ = 15771264.

The previous prime is 25135493. The next prime is 25135529. The reversal of 25135503 is 30553152.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 25135503 - 2¹⁷ = 25004431 is a prime.

It is a super-2 number, since 2×25135503² = 1263587022126018, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25135403) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 246376 + ... + 246477.

It is an arithmetic number, because the mean of its divisors is an integer number (4435686).

Almost surely, 2^25135503 is an apocalyptic number.

25135503 is a deficient number, since it is larger than the sum of its proper divisors (10349985).

25135503 is a wasteful number, since it uses less digits than its factorization.

25135503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 492873.

The product of its (nonzero) digits is 2250, while the sum is 24.

The square root of 25135503 is about 5013.5319885286. The cubic root of 25135503 is about 292.9291064644.

Adding to 25135503 its reverse (30553152), we get a palindrome (55688655).

The spelling of 25135503 in words is "twenty-five million, one hundred thirty-five thousand, five hundred three".