25016145 has 64 divisors (see below), whose sum is σ = 50595840. Its totient is φ = 10338240.

The previous prime is 25016143. The next prime is 25016171. The reversal of 25016145 is 54161052.

It is not a de Polignac number, because 25016145 - 2¹ = 25016143 is a prime.

It is a super-2 number, since 2×25016145² = 1251615021322050, which contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (25016143) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 139666 + ... + 139844.

It is an arithmetic number, because the mean of its divisors is an integer number (790560).

Almost surely, 2^25016145 is an apocalyptic number.

It is an amenable number.

25016145 is an abundant number, since it is smaller than the sum of its proper divisors (25579695).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25016145 is a wasteful number, since it uses less digits than its factorization.

25016145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227 (or 205 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 25016145 is about 5001.6142394231. The cubic root of 25016145 is about 292.4647046315.

Adding to 25016145 its reverse (54161052), we get a palindrome (79177197).

It can be divided in two parts, 2501 and 6145, that added together give a triangular number (8646 = T₁₃₁).

The spelling of 25016145 in words is "twenty-five million, sixteen thousand, one hundred forty-five".