25146381 has 16 divisors (see below), whose sum is σ = 36399104. Its totient is φ = 15349824.

The previous prime is 25146371. The next prime is 25146403. The reversal of 25146381 is 18364152.

It is not a de Polignac number, because 25146381 - 2¹⁹ = 24622093 is a prime.

It is a super-2 number, since 2×25146381² = 1264680954794322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25146311) 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, 2415 + ... + 7491.

It is an arithmetic number, because the mean of its divisors is an integer number (2274944).

Almost surely, 2^25146381 is an apocalyptic number.

It is an amenable number.

25146381 is a deficient number, since it is larger than the sum of its proper divisors (11252723).

25146381 is a wasteful number, since it uses less digits than its factorization.

25146381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5220.

The product of its digits is 5760, while the sum is 30.

The square root of 25146381 is about 5014.6167351055. The cubic root of 25146381 is about 292.9713577674.

The spelling of 25146381 in words is "twenty-five million, one hundred forty-six thousand, three hundred eighty-one".