210145425 has 24 divisors (see below), whose sum is σ = 397075776. Its totient is φ = 96066240.

The previous prime is 210145423. The next prime is 210145447. The reversal of 210145425 is 524541012.

It is not a de Polignac number, because 210145425 - 2¹ = 210145423 is a prime.

It is a super-2 number, since 2×210145425² = 88322199296861250, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 210145395 and 210145404.

It is not an unprimeable number, because it can be changed into a prime (210145421) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 199614 + ... + 200663.

It is an arithmetic number, because the mean of its divisors is an integer number (16544824).

Almost surely, 2^210145425 is an apocalyptic number.

210145425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

210145425 is a deficient number, since it is larger than the sum of its proper divisors (186930351).

210145425 is a wasteful number, since it uses less digits than its factorization.

210145425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400297 (or 400292 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 24.

The square root of 210145425 is about 14496.3935170097. The cubic root of 210145425 is about 594.5293691486.

Adding to 210145425 its reverse (524541012), we get a palindrome (734686437).

The spelling of 210145425 in words is "two hundred ten million, one hundred forty-five thousand, four hundred twenty-five".