421254025 has 12 divisors (see below), whose sum is σ = 527743132. Its totient is φ = 333527040.

The previous prime is 421254023. The next prime is 421254037. The reversal of 421254025 is 520452124.

It can be written as a sum of positive squares in 6 ways, for example, as 2274064 + 418979961 = 1508^2 + 20469^2 .

It is not a de Polignac number, because 421254025 - 2¹ = 421254023 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (421254023) 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, 84432 + ... + 89281.

Almost surely, 2^421254025 is an apocalyptic number.

It is an amenable number.

421254025 is a deficient number, since it is larger than the sum of its proper divisors (106489107).

421254025 is a wasteful number, since it uses less digits than its factorization.

421254025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173820 (or 173815 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 25.

The square root of 421254025 is about 20524.4738056789. The cubic root of 421254025 is about 749.6318341162.

The spelling of 421254025 in words is "four hundred twenty-one million, two hundred fifty-four thousand, twenty-five".