25151489 has 16 divisors (see below), whose sum is σ = 28978560. Its totient is φ = 21605760.

The previous prime is 25151473. The next prime is 25151513. The reversal of 25151489 is 98415152.

It is not a de Polignac number, because 25151489 - 2⁴ = 25151473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25151089) 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, 21959 + ... + 23075.

It is an arithmetic number, because the mean of its divisors is an integer number (1811160).

Almost surely, 2^25151489 is an apocalyptic number.

It is an amenable number.

25151489 is a deficient number, since it is larger than the sum of its proper divisors (3827071).

25151489 is a wasteful number, since it uses less digits than its factorization.

25151489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1240.

The product of its digits is 14400, while the sum is 35.

The square root of 25151489 is about 5015.1260203508. The cubic root of 25151489 is about 292.9911935757.

It can be divided in two parts, 2515 and 1489, that added together give a palindrome (4004).

The spelling of 25151489 in words is "twenty-five million, one hundred fifty-one thousand, four hundred eighty-nine".