42510425 has 12 divisors (see below), whose sum is σ = 53023020. Its totient is φ = 33808320.

The previous prime is 42510409. The next prime is 42510427. The reversal of 42510425 is 52401524.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 4700224 + 37810201 = 2168^2 + 6149^2 .

It is not a de Polignac number, because 42510425 - 2⁴ = 42510409 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42510425.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42510427) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 590 + ... + 9239.

It is an arithmetic number, because the mean of its divisors is an integer number (4418585).

Almost surely, 2^42510425 is an apocalyptic number.

It is an amenable number.

42510425 is a deficient number, since it is larger than the sum of its proper divisors (10512595).

42510425 is a wasteful number, since it uses less digits than its factorization.

42510425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10012 (or 10007 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 42510425 is about 6520.0019171776. The cubic root of 42510425 is about 349.0051339819.

Adding to 42510425 its reverse (52401524), we get a palindrome (94911949).

It can be divided in two parts, 425104 and 25, that multiplied together give a square (10627600 = 3260²).

The spelling of 42510425 in words is "forty-two million, five hundred ten thousand, four hundred twenty-five".