25042101 has 32 divisors (see below), whose sum is σ = 40212480. Its totient is φ = 13552704.

The previous prime is 25042099. The next prime is 25042111. The reversal of 25042101 is 10124052.

It is not a de Polignac number, because 25042101 - 2¹ = 25042099 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25042111) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 66951 + ... + 67323.

It is an arithmetic number, because the mean of its divisors is an integer number (1256640).

Almost surely, 2^25042101 is an apocalyptic number.

25042101 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

25042101 is a deficient number, since it is larger than the sum of its proper divisors (15170379).

25042101 is a wasteful number, since it uses less digits than its factorization.

25042101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 545.

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 25042101 is about 5004.2083289967. The cubic root of 25042101 is about 292.5658205297.

Adding to 25042101 its reverse (10124052), we get a palindrome (35166153).

The spelling of 25042101 in words is "twenty-five million, forty-two thousand, one hundred one".