25135555 has 8 divisors (see below), whose sum is σ = 30366000. Its totient is φ = 19972896.

The previous prime is 25135541. The next prime is 25135559. The reversal of 25135555 is 55553152.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 25135555 - 2¹⁵ = 25102787 is a prime.

It is a super-2 number, since 2×25135555² = 1263592250316050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (25135559) 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, 16125 + ... + 17614.

It is an arithmetic number, because the mean of its divisors is an integer number (3795750).

Almost surely, 2^25135555 is an apocalyptic number.

25135555 is a deficient number, since it is larger than the sum of its proper divisors (5230445).

25135555 is a wasteful number, since it uses less digits than its factorization.

25135555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33893.

The product of its digits is 18750, while the sum is 31.

The square root of 25135555 is about 5013.5371744907. The cubic root of 25135555 is about 292.9293084669.

The spelling of 25135555 in words is "twenty-five million, one hundred thirty-five thousand, five hundred fifty-five".