25270145 has 8 divisors (see below), whose sum is σ = 31064040. Its totient is φ = 19722880.

The previous prime is 25270139. The next prime is 25270151. The reversal of 25270145 is 54107252.

It is an interprime number because it is at equal distance from previous prime (25270139) and next prime (25270151).

It can be written as a sum of positive squares in 4 ways, for example, as 628849 + 24641296 = 793^2 + 4964^2 .

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

It is not a de Polignac number, because 25270145 - 2⁶ = 25270081 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61430 + ... + 61839.

It is an arithmetic number, because the mean of its divisors is an integer number (3883005).

Almost surely, 2^25270145 is an apocalyptic number.

It is an amenable number.

25270145 is a deficient number, since it is larger than the sum of its proper divisors (5793895).

25270145 is a wasteful number, since it uses less digits than its factorization.

25270145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123315.

The product of its (nonzero) digits is 2800, while the sum is 26.

The square root of 25270145 is about 5026.9419133306. The cubic root of 25270145 is about 293.4512145299.

Adding to 25270145 its reverse (54107252), we get a palindrome (79377397).

The spelling of 25270145 in words is "twenty-five million, two hundred seventy thousand, one hundred forty-five".