25425051 has 16 divisors (see below), whose sum is σ = 35614464. Its totient is φ = 16102944.

The previous prime is 25425041. The next prime is 25425061. The reversal of 25425051 is 15052452.

Added to its reverse (15052452) it gives a triangular number (40477503 = T₈₉₉₇).

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (25425041) and next prime (25425061).

It is not a de Polignac number, because 25425051 - 2⁷ = 25424923 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25425011) 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, 9660 + ... + 12006.

It is an arithmetic number, because the mean of its divisors is an integer number (2225904).

Almost surely, 2^25425051 is an apocalyptic number.

25425051 is a deficient number, since it is larger than the sum of its proper divisors (10189413).

25425051 is a wasteful number, since it uses less digits than its factorization.

25425051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2530.

The product of its (nonzero) digits is 2000, while the sum is 24.

The square root of 25425051 is about 5042.3259513839. The cubic root of 25425051 is about 294.0496121560.

Adding to 25425051 its reverse (15052452), we get a triangular number (40477503 = T₈₉₉₇).

The spelling of 25425051 in words is "twenty-five million, four hundred twenty-five thousand, fifty-one".